Peggy A. Shibata

Peggy A. Shibata, M.S., P.E.

Senior Consultant

Ms. Shibata is a Senior Consultant at ESi and offers a broad range of specialization in mechanical engineering and biomechanics. In particular, she possesses an understanding of how biomechanics can be a crucial consideration in claims and legal matters, as well as how biomechanics can be interrelated with other engineering disciplines. She is thorough and detail-oriented, is committed to providing sound technical expertise, and is dedicated to delivering a well-communicated product to ESi’s clients.

Ms. Shibata has expertise in the reconstruction of a wide range of accidents that have involved all types of vehicles, pedestrians, and bicyclists. Relevant human factors topics such as perception reaction time, available visual field of view, and night-time visibility have been critical elements of reconstructions. She has special knowledge of the standard method and established limits related to the dynamic characterization of roller coasters and has been directly involved in the field testing of multiple roller coasters around the country. Her experience lends itself to a greater appreciation of the general kinematic relationship between an occupant and a given mode of transport.

Ms. Shibata’s knowledge of rigid body dynamics, in conjunction with human anthropometry and capabilities, has aided in understanding likely accident event and injury sequences and potential contributory aspects. Her use of Injury analyses and established human injury tolerances has enabled her to address the likelihood of a claimed injury being causally related to particular accident specifics. She has provided technical assistance to clients on projects related to recreational activities and equipment, slips and trips, slip resistance, falls from ground level and from heights, and balance and aging. She has been involved in numerous surrogate studies that have aided in the characterization of human capabilities, tendencies, and motions during the performance of specific tasks.


  • Flip-Flops: A Survey of Risk Perception and Acceptance, Proceedings of the Human Factors and Ergonomics Society, October 2022
  • Final Report: Compliance Testing for Locomotive LED Headlights and Auxiliary Lights, Phase IV, U.S. Department of Transportation, Federal Railroad Administration, February 2021
  • Comparative Lumbar Spine Acceleration Data During Daily and Dynamic Activities, Tasks of Daily Driving, and Low Speed Lateral Vehicle Impacts, Biomedical Sciences Instrumentation Journal, Volume 55(2), April 2019
  • Head Acceleration Measurements During Vehicle Driving Tasks and Lateral Impacts Relative to Head Accelerations During Daily and Dynamic Activities, Biomedical Sciences Instrumentation Journal, Volume 55(2), April 2019
  • Enhancing Contrast-Sensitivity Charts for Validating Visual Representations of Low-Illumination Scenes, SAE Technical Paper 2019-01-1009, January 2019
  • The Kinematic Analysis of Occupant Excursions and Accelerations During Staged Low Speed Far-Side Lateral Vehicle-to-Vehicle Impacts, SAE Technical Paper, January 2019
  • Analysis of an Unexpected Impact to the Crown of the Head, Proceedings of the XXVIIIth Annual International Occupational Ergonomics and Safety Conference, June 2016
  • Human Factors Techniques in the Analysis of Low Illumination Accidents: Integrating Conspicuity, Validated Photography, and Scientific Animation, Proceedings of the Human Factors and Ergonomics Society 59th Annual Meeting, October 2015
  • Analysis of Nighttime Vehicular Collisions and the Application of Human Factors: An Integrated Approach, SAE Technical Paper, SAE International, January 2014
  • Age and Gender Moderate the Effects of Localized Muscle Fatigue on Lower Extremity Joint Torques Used During Quiet Stance, Human Movement Science, January 2011
  • See CV for further publications

Project Experience

ESi's expertise spans dozens of industries and specializations organized across several practice groups, each staffed by dozens of in-house experts with the technical knowledge, hands-on expertise, and courtroom experience required to execute projects for and with our clients from start to finish.

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